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Description of problem:

In the upstream kernel the queuecommand callout is called with no locks held. In RHEL 6 libiscsi is still using the old style locking so the queuecomand function is called with the host lock held and irqs disabled.

So in RHEL 6 when beiscsi_alloc_pdu is called and and spin_unlock_bh is used it will cause errors.

There is not need to use the bh locking in beiscsi_alloc_pdu because libiscsi will always do the right thing.


Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
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Actual results:


Expected results:


Additional info:

This request was evaluated by Red Hat Product Management for inclusion
in a Red Hat Enterprise Linux maintenance release. Product Management has 
requested further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed 
products. This request is not yet committed for inclusion in an Update release.

*** Bug 816190 has been marked as a duplicate of this bug. ***

Patch(es) available on kernel-2.6.32-269.el6

Ran IO Stress test for 24 hours against NetApp target and no error has been found.

uname -r
2.6.32-269.el6.x86_64

rpm -q iscsi-initiator-utils
iscsi-initiator-utils-6.2.0.872-41.el6.x86_64

modinfo be2iscsi
filename:       /lib/modules/2.6.32-269.el6.x86_64/kernel/drivers/scsi/be2iscsi/be2iscsi.ko
license:        GPL
author:         Emulex Corporation
version:        4.2.162.0

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2012-0862.html